During the labour with baby Quinn, surgeons discovered Lorna had a seven inch abdominal tear - which is common in muscular women as their taught stomach muscles can't stretch to accommodate the growing baby bump.

But fitness-mad Lorna was back in the gym six weeks later.

Lorna said: “My midwife said I should calm down my weightlifting regime but I felt I knew my body best and I carried on as normal.”

Impressive: Beefy Lorna has no problem coping with the physical demands of being a firefighter (Image: Barcroft Media)

Now she juggles her gruelling fitness regime with being a mum to four children and she also works full time as a firefighter.

Lorna, whose partner Steven, 32, is also a bodybuilder, wakes up at 5.30am every day to fit in an hour of cardio before starting the school run.

Her day is then a frantic cycle of washing, cleaning, baby feeds, and changing nappies – with firefighter shifts and weightlifting crammed in between.

Dedicated: On top of bodybuilding, Lorna has been a firefighter for 14 years (Image: Barcroft Media)

Lorna, who is mum to Taylor, 15, Marlee, 13, Reid, eight, and one-year-old Quinn, said: “Marlee and Reid are into their fitness already and they’ve said that they want to get big muscles when they’re older.

“I think Steven and I are setting a good example by showing the kids how to look after their bodies.

“People do stare at me when I’m out and about and I’ve seen kids grab their mum’s hand when they’ve caught sight of me in the supermarket.

“But my children and Steven couldn’t be prouder.”

Brood: Lorna at home with her family (left to right) son Reid, partner Steven, daughter Taylor, baby Quinn, daughter Marlee (Image: Barcroft Media)

Lorna began weightlifting in 2012 after suffering from a knee injury during a charity football match.

She started training in an attempt to build muscle around the joint but soon found herself addicted to pumping iron.

Lorna, who is 5ft 7, and weighs 12 stone of solid muscle, said: “The change in my body was dramatic and I loved seeing my muscles strengthen and grow.

“Within six months I’d gained a stone in muscle and went from a size 10 to a size 16.”

No regrets: Doctors warned Lorna about weightlifting while pregnant, but she felt she knew her own body (Image: Barcroft Media)

And it was Lorna’s new hardcore hobby that helped her find love, with fellow bodybuilder Steven.

Lorna’s statuesque physique caught the eye of Steven, an asbestos removal supervisor, at a bodybuilding competition in 2013.

And their mutual love of the weights bench led to romance outside of the gym.

Lorna said: “It’s great to be with someone who understands the level of commitment and dedication and won’t try to tempt you away from your diet with a pizza.

“Sometimes I can be snappy with Steven when I’m on a shredding diet and I’m hungry but he understands where I’m coming from because he might have been in the same situation a week before.”